mirror of
https://github.com/go-acme/lego.git
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133 lines
3.4 KiB
Go
133 lines
3.4 KiB
Go
// Package selectel implements a DNS provider for solving the DNS-01 challenge using Selectel Domains API.
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package selectel
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import (
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"context"
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"errors"
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"fmt"
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"net/http"
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"net/url"
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"time"
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"github.com/go-acme/lego/v5/challenge"
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"github.com/go-acme/lego/v5/challenge/dns01"
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"github.com/go-acme/lego/v5/providers/dns/internal/clientdebug"
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"github.com/go-acme/lego/v5/providers/dns/internal/selectel/internal"
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)
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const MinTTL = 60
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var _ challenge.ProviderTimeout = (*DNSProvider)(nil)
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// Config is used to configure the creation of the DNSProvider.
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type Config struct {
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Token string
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PropagationTimeout time.Duration
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PollingInterval time.Duration
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TTL int
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HTTPClient *http.Client
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}
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// DNSProvider implements the challenge.Provider interface.
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type DNSProvider struct {
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config *Config
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client *internal.Client
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}
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// NewDNSProviderConfig return a DNSProvider instance configured for selectel.
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func NewDNSProviderConfig(config *Config, baseURL string) (*DNSProvider, error) {
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if config == nil {
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return nil, errors.New("the configuration of the DNS provider is nil")
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}
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if config.Token == "" {
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return nil, errors.New("credentials missing")
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}
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if config.TTL < MinTTL {
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return nil, fmt.Errorf("invalid TTL, TTL (%d) must be greater than %d", config.TTL, MinTTL)
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}
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client := internal.NewClient(config.Token)
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if config.HTTPClient != nil {
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client.HTTPClient = config.HTTPClient
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}
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client.HTTPClient = clientdebug.Wrap(client.HTTPClient)
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if baseURL != "" {
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var err error
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client.BaseURL, err = url.Parse(baseURL)
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if err != nil {
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return nil, err
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}
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}
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return &DNSProvider{config: config, client: client}, nil
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}
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// Timeout returns the Timeout and interval to use when checking for DNS propagation.
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// Adjusting here to cope with spikes in propagation times.
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func (d *DNSProvider) Timeout() (timeout, interval time.Duration) {
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return d.config.PropagationTimeout, d.config.PollingInterval
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}
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// Present creates a TXT record to fulfill DNS-01 challenge.
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func (d *DNSProvider) Present(ctx context.Context, domain, token, keyAuth string) error {
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info := dns01.GetChallengeInfo(ctx, domain, keyAuth)
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// TODO(ldez) replace domain by FQDN to follow CNAME.
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domainObj, err := d.client.GetDomainByName(ctx, domain)
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if err != nil {
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return fmt.Errorf("get domain by name: %w", err)
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}
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txtRecord := internal.Record{
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Type: "TXT",
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TTL: d.config.TTL,
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Name: info.EffectiveFQDN,
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Content: info.Value,
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}
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_, err = d.client.AddRecord(ctx, domainObj.ID, txtRecord)
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if err != nil {
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return fmt.Errorf("add record: %w", err)
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}
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return nil
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}
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// CleanUp removes a TXT record used for DNS-01 challenge.
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func (d *DNSProvider) CleanUp(ctx context.Context, domain, token, keyAuth string) error {
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info := dns01.GetChallengeInfo(ctx, domain, keyAuth)
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recordName := dns01.UnFqdn(info.EffectiveFQDN)
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// TODO(ldez) replace domain by FQDN to follow CNAME.
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domainObj, err := d.client.GetDomainByName(ctx, domain)
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if err != nil {
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return fmt.Errorf("%w", err)
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}
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records, err := d.client.ListRecords(ctx, domainObj.ID)
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if err != nil {
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return fmt.Errorf("list records: %w", err)
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}
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// Delete records with specific FQDN
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var lastErr error
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for _, record := range records {
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if record.Name == recordName {
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err = d.client.DeleteRecord(ctx, domainObj.ID, record.ID)
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if err != nil {
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lastErr = fmt.Errorf("delete record: %w", err)
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}
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}
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}
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return lastErr
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}
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